# Topological Flat-Band-Driven Metallic Thermoelectricity

https://mdr.nims.go.jp/datasets/4ff06013-77d0-4052-aaef-0072bf8b9113

## File

- [Physical Review X---Topological Flat-Band-Driven Metallic Thermoelectricity.pdf](https://mdr.nims.go.jp/filesets/ba652bb5-21ba-4431-a028-55bc9c8fd3b8/download) ([Detail](https://mdr.nims.go.jp/filesets/ba652bb5-21ba-4431-a028-55bc9c8fd3b8.md))

## Id

4ff06013-77d0-4052-aaef-0072bf8b9113

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-11-08T15:50:47.282344Z

## Updated at

2025-11-11T07:30:10.103245Z

## Published at

2025-11-11T07:24:12.870344Z

## Doi



## First published url

https://doi.org/10.1103/physrevx.15.021054

## Date published

2025-05-14

## Recorded date published

2025-5

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Topological Flat-Band-Driven Metallic Thermoelectricity
  title_type: original
  lang: en

## Description

- description: "Thermoelectric (TE) materials are useful for applications such as
    waste heat harvesting or efficient\r\nand targeted cooling. While various strategies
    towards superior thermoelectrics through a reduction\r\nof the lattice thermal
    conductivity have been developed, a path to enhance the power factor is\r\npressing.
    Here, we report large power factors up to 5mWm−1 K−2 at room temperature in the\r\nkagome
    metal Ni3In1–xSnx . This system is predicted to feature almost dispersionless
    flat bands\r\nin conjunction with highly dispersive Dirac-like bands in its electronic
    structure around the Fermi\r\nenergy EF [L. Ye et al., Nature Physics 1–5 (2024)].
    Within this study, we experimentally and\r\ntheoretically showcase that tuning
    this flat band precisely below EF by chemical doping x boosts\r\nthe Seebeck coefficient
    and power factor, as highly mobile charge carriers scatter into the flat-band\r\nstates.
    Our work demonstrates the prospect of engineering extremely flat and highly dispersive\r\nbands
    towards the Fermi energy in kagome metals and introduces topological flat bands
    as a novel\r\ntuning knob for thermoelectrics."
  description_type: abstract
  lang: und

## Creator

- name: Fabian Garmroudi
  role: author
- name: Jennifer Coulter
  role: author
- name: Illia Serhiienko
  role: author
  orcid: https://orcid.org/0000-0002-3072-9412
  organization: National Institute for Materials Science
- name: Simone Di Cataldo
  role: author
- name: Michael Parzer
  role: author
- name: Alexander Riss
  role: author
- name: Matthias Grasser
  role: author
- name: Simon Stockinger
  role: author
- name: Sergii Khmelevskyi
  role: author
- name: Kacper Pryga
  role: author
- name: Bartlomiej Wiendlocha
  role: author
- name: Karsten Held
  role: author
- name: Takao Mori
  role: author
  orcid: https://orcid.org/0000-0003-2682-1846
  organization: National Institute for Materials Science
- name: Ernst Bauer
  role: author
- name: Antoine Georges
  role: author
- name: Andrej Pustogow
  role: author

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: thermoelectric
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review X
  issn: '21603308'
  volume: '15'
  issue: '2'
  start_page: 21054
  end_page: 21054
  article_number: '021054'

## Conference



## Related item



## Funding

- identifier: JPMJMI19A1
  funder_name: Japan Science and Technology Agency
- funder_name: Technische Universität Wien
- funder_name: Northwestern University
- funder_name: Massachusetts Institute of Technology

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: ba652bb5-21ba-4431-a028-55bc9c8fd3b8
  filename: Physical Review X---Topological Flat-Band-Driven Metallic Thermoelectricity.pdf
  content_type: application/pdf
  size: 2007867
  md5: a5dabfc20130d7129f2167601e075c0b

## Thumbnail

fileset_id: ba652bb5-21ba-4431-a028-55bc9c8fd3b8
filename: Physical Review X---Topological Flat-Band-Driven Metallic Thermoelectricity.pdf